The trade life cycle theory divides the trade cycle into four periods: birth, growth, maturity and decline in which the market demand and trade competition have different features.

在这四个不同的时期，市场需求与行业竞争结构呈现不同的特点，因而市场开发就要因应一个行业或产品的不同特点采取不同的营销手段来开发市场。

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The trade life cycle theory divides the trade cycle into four periods: birth, growth, maturity and decline in which the market demand and trade competition have different features.

在这四个不同的时期，市场需求与行业竞争结构呈现不同的特点，因而市场开发就要因应一个行业或产品的不同特点采取不同的营销手段来开发市场。

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